Post by
Q45tech »
https://forums.nicoclub.com/q45tech-u112.html
Sat Sep 09, 2006 4:41 am
Changing it frequently is much more important than the brand or type [assuming correct viscosity]...............because the sump volume and filter are so very small. All quality oils must last running 65 hours extreme heat test. ~~~4,000 miles however some average quality oil may evaporate up to 15% in such a test.............that's 3/4 quart.
ALWAYS CHECK THE OIL LEVEL WEEKLY until you are positive that you haven't gotten a heavy oil user [weak ring tension] seems more common than the previous designs [1985-2001].............running low of oil starts a serious cascade of events and isn't covered by warranty.
Full synthetics can function better at temperature extremes and may extend the engine life of the performance at some extreme mileage.
The question is how do you want the engine to perform at 200,000 or 300,000 miles?